GB770756A - Improvements in and relating to the casting of metals - Google Patents
Improvements in and relating to the casting of metalsInfo
- Publication number
- GB770756A GB770756A GB1095354A GB1095354A GB770756A GB 770756 A GB770756 A GB 770756A GB 1095354 A GB1095354 A GB 1095354A GB 1095354 A GB1095354 A GB 1095354A GB 770756 A GB770756 A GB 770756A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- fluoride
- exceeding
- oxidizing agent
- oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/06—Ingot moulds or their manufacture
- B22D7/10—Hot tops therefor
- B22D7/104—Hot tops therefor from exothermic material only
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/06—Dry methods smelting of sulfides or formation of mattes by carbides or the like
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
Exothermic material for use in the casting of metals contains aluminium and oxide of a metal such as iron or manganese or other oxide which is capable of being reduced under the conditions of use, together with a powerful oxidizing agent and a fluoride, the fluoride being present in a proportion between 12.5 and 25 per cent of the material and the material having a relatively low ignition temperature not exceeding 600 DEG C. The powerful oxidizing agent may consist of a chlorate and/or nitrate and may be present in a proportion exceeding 7 per cent but preferably not exceeding 15 per cent. The material may consist of aluminium 20-55 per cent, metallic oxide 5-35 per cent, fluoride salt such as fluorspar, fluoral, cryolite, sodium or potassium fluoride 12.5-25 per cent, a powerful oxidizing agent 7.0-15.0 per cent, inorganic binder such as bentonite up to 5 per cent, organic or other carbonaceous matter optional up to 10 per cent and refractory such as graded silica sand or broken firebrick the remainder if any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1095354A GB770756A (en) | 1954-04-14 | 1954-04-14 | Improvements in and relating to the casting of metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1095354A GB770756A (en) | 1954-04-14 | 1954-04-14 | Improvements in and relating to the casting of metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB770756A true GB770756A (en) | 1957-03-27 |
Family
ID=9977350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1095354A Expired GB770756A (en) | 1954-04-14 | 1954-04-14 | Improvements in and relating to the casting of metals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB770756A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2177635A1 (en) * | 2008-10-09 | 2010-04-21 | Jean Armabessaire | Method of recovering at least one non-ferrous metal by melting and silica-based addition product for implementing the method |
| CN101905294A (en) * | 2010-07-15 | 2010-12-08 | 沈阳东大高温材料有限公司 | Method for preparing high-performance heat-generating agent |
-
1954
- 1954-04-14 GB GB1095354A patent/GB770756A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2177635A1 (en) * | 2008-10-09 | 2010-04-21 | Jean Armabessaire | Method of recovering at least one non-ferrous metal by melting and silica-based addition product for implementing the method |
| CN101905294A (en) * | 2010-07-15 | 2010-12-08 | 沈阳东大高温材料有限公司 | Method for preparing high-performance heat-generating agent |
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